Governor



GOVERNOR Filed May 29, 1936 A L 1 37 4a 6 n. w a 8 M V a J 2 Mm 3 1 3 6Z 7 a z Ma 4 4 w p I- Kl G. a d 6 7 a Z M a Patented Apr. 4, 1939GOVERNOR William E. Leibing, Detroit, Mich., assignor to LeibingAutomotive Devices,

1110., Detroit,

Mich a corporation of Nevada. Application May 29, 1936, Serial No.82,655

'1 Claims. (01. 123-98) disclosed in copending application S. N.738,114,

filed August 2, 1934, of which I am a joint inventor, and. myapplication S. N.' 67,358, filed March 5, 1936.

In overcoming the disadvantages of the prior art, it is a major objectof my invention to provide a governor for controlling fluid flow througha conduit in combination with novel means for preventing so-calledthrottle cheat, the factors entering into the actuation of the throttlecheat in the conduit. v

A further object of my invention is to provide novel means forpreventing throttle cheat in combination with a governor located in thein- 5 take of an internal combustion engine wherein a pressureresponsive element is provided to actuate said means, the fluid passingthrough the filter leading to the carburetor and entering into theintake manifold being utilized as the actuating force for the pressureresponsive means.

A further object of my invention is to provide novel means forpreventing throttle cheat in connection with a governor mounted in theintake of an internal combustion engine wherein a pressure responsiveelement is provided in connection with a throttle cheat preventer, theelement being subject only to fluid that has been cleaned by the filterassociated with the carburetor of the engine.

Still a further object of my invention is to provide a novel governorembodying means for preventing throttle cheat, the governor beingtamper-proof and not subject to meddling by an unauthorized person.

A further object of my invention is to provide novel means forpreventing throttle cheat in combination with a governor employed in aninternal combustion engine wherein the need for a filter on the throttlecheat device is eliminated, 50 and the cost of the complete assemblycorrespondingly reduced.

A further object of my invention is to provide a governor for use inconnection with an internal combustion engine wherein novel means forpreventing throttle cheat are employed includdevice being determined byfluid conditions with ing a pressure responsive element, the latterbeing arranged so that asmospheric air cannot leak into the governor andinterfere with the proper carburetion of the fuel mixture passing to theengine.'

A further object of my invention'is to provide a governor for use inconnection with an internal combustion engine wherein novel means forpreventing throttle cheat is employed including a pressure responsiveelement, the element being arranged in connection with the carburetor ofthe internal combustion engine so that it is subject only to air passingthrough the carburetor and subsequently into the intake manifold of theengine, and does not interfere with the supply of fuel to the engine nordisturb the quality of the fuel mixture.

A further object of my invention is to provide a governor forcontrolling fluid flow through a conduit in combination with novel meansfor preventing so-called throttle cheat, the latter means beingrelatively inexpensive and simple to manufacture as compared to theprior art devices.

Additional objects, many of a subordinate or more specific nature, willappear from a study of the following detailed description and the claimsappended hereto when taken in connection with the accomparwing drawingwherein:

Figure 1 is a diagrammatic view of the intake manifold of an internalcombustion engine shown in connection with the carburetor andillustrating a preferred embodiment of the present invennism shown indotted lines.

With continued reference to the drawing, wherein like referencecharacters are employed to designate like-parts, reference numeral Iidesignates an apertured flange in a. conduit l2 of a carburetor l3 towhich air is supplied from an air filter I 4 through'a connection l5.Flange II is designed for attachment to a flange it of an intakemanifold 11, but is shown separated therefrom to provide a space for thereception of a governor generally indicated at G. If desired, adegassing device (not shown) may also be inserted between the manifoldsection and conduit l2 as described in connection with application S. N.568,844, flled October 14, 1931.

Governor G has a cylindrical bore |8 formed therein aligned withcarburetor conduit I2 and manifold passageway l1, bore l8 being formedwithin a block l9. Block I3 is generally similar in shape andcross-section to flanges II and I5 of'the carburetor and intakemanifold, respectively, and cooperates therewith to form bores 2| forthe reception of assembly bolts (not shown) which serve to rigidlysecure the governor in any desired position.

If desired, the bores-2| may be made slightly larger than thecorresponding bores in the adjacent flanges so as to provide for readyconnection of the governor to flanges of varying size. Suitable gasketsmay be provided between the contacting flanges to insure against leakagefrom the conduit.

It will be noted that substantially all mechanism associated therewithas will be hereinafter described, is contained within planes passingthrough the flanges on governor block it.

For a purpose that'will be later described, one end of a bore 2| isenlarged as shown at 22 to receive a bushing 23. Bushing 23 has anenlarged flange 24 thereon of a size to flt within a still largeraperture 25 formed in the block l9 concentric with bore 2|. As will benoted from Figure 2, the aperture 25 is deeper than the width of flange24 on bushing 23 and defines an annular passage around the bushing for apurpose that will later appear.

Conduit |2 connected to the carburetor |3 contains a throttle valve 26,preferably of the butterfly type, which is arranged to be manuallyoperated to control the quantity of fuel mixture drawn into the intakemanifold H.

The governing device comprises an oscillatable valve mechanism 21 forthrottling passageway l8 when the engine reaches a predetermined speed.Valve mechanism 21 comprises a fixed bridge member 28 and spaced vanes29 and 3| arranged to pivot about an axis 32. Vane 3| is provided with aprojection or lug 33 thereon which is arranged to cooperate with thethrottle cheat mechanism as will be later described.

The valve mechanism disclosed, together with the spring means which isemployed to react against the effect of the fluid flowingthrough theconduit upon the vanes of the governor, is fully described in mycopending application S. N.

738,114, filed August 2, 1934, which issued May.

25, 1937 as United States, Patent No. 2,081,825, and a detailedconsideration thereof in the present application is consideredunnecessary.

In the present invention a relatively small bore or feed line 34 isformed in block l9, aplunger 35 being provided to reciprocate in bore 34to contact lug 33 on vane 3| of the governor 21. Plunger 35 is of alength to extend through a casing 36 formed upon the governor block l9which contains a cylinder 31 within which operates a piston 33. Piston38 is preferably cupshaped as shown with the end of plunger 35 arrangedto abut against the interior of the cup. A spring 39 is arranged toreact against the wall 4| of cylinder 31 and against a pin 42 secured ina suitable aperture in theend of plunger 35 to normally maintain piston38 in the right end of cylinder 31. Piston 38 is preferably grooved asshown at 43 to keep the leakage thereby to a minimum.

As shown in Figures 2 and 3, the end of cylinder 31 is open tofacilitate manufacture thereof and assembly or the respective parts.After 5 assembly, cylinder 31 is closed preferably by a suitable driveplug 44 to seal the piston against the access of atmosphere and toprevent tamperlng therewith. If desired, the drive plug 44 may be sealedby means of a suitable soft metal in which an impression may be made,any unauthorized tampering with the plug being indicated by themutilation of the impression.

A bore 45, preferably parallel to the axis of cylinder 31 is formed inblock l9 extending from a point adjacentthe outer end of cylinder 31 toa passage or bore 31. A cross bore it leading from bore 45 to theinterior of cylinder til at its end adjacent the drive plug 3 3 isprovided as shown in Figure 4. 20

Bore 31 is arranged to connect with a bore 32 formed in the wall of thecarburetor casing extending downwardly to an intersection with a bore 49in the carburetorcasing, the outer end of which is closed by a suitableplug 5i. Bore g;

49 opens within the conduit l2 preferably at a point adjacent the upperend of the venturi 52 of the carburetor. This locatlonof the bore 49 isdesirable since by the location thereof adjacent the outer edge ofventuri 52, the fluid entering 3( the bore 49 consists almost entirelyof air since the fuel in the carburetor is discharged into the center ofthe venturi and at the point where the venturi meets the bore 49, only anegligible amount of fuel is found. This arrangement is alsoadvantageous in that there is no interference with the mixture passingto the intake manifold and no cutting off of the fuel supply orside-tracking thereof which might introduce irregularities in the feedof the proper fuel mixg ture to the engine. I

As is evident from Figure 2, the piston 33 will be actuated when thereis a difference in pressure between the conduit l8 adjacent the governorvalve and the opening of the bore 34 into 4 bore l8, and the carburetorconduit adjacent the bore 49. When the differential of pressure is suchthat the pressure adjacent the bore 49 is greater than that adjacent thebore 34,. piston 38 will move to the left against the action of the 5spring 39, the plunger 35 contacting the lug 33 to move the governor toclosed position. -When a differential of pressure no longer exists or ismaterially reduced, spring 31 will force the piston and plunger backinto the position shown in Figure 2 wherein the plunger has no effectupon the operation of the governor, and the throttle cheat device as awhole is inoperative.

It will be noted that this construction is such that the fluid employedin actuating the piston of the throttle cheat device is cleaned by theair filter attached to the carburetor. Moreover it will be noted thatthere is no aperture accessible toa dishonest driver or otherunauthorized per son to manipulate the governor, nor is there anypossibility of leakage of the fuel mixture in passing through theengine.-

If desired, a bore 53 may be provided leading from the cylinder 31 tothe interior of conduit l3 to further facilitate the transmission ofpressure from the conduit I8 to the cupped end of the piston 36.

To prevent repeated contact between piston 33' and the drive plug 44, apin 54 may be secured l across cylinder 31 adjacent the drive plug II toreceive theimpact of the piston.

From the foregoing disclosure it will be seen that I have provided adevice whereby it is impossible by improper manipulation of the throttlevalve to gradually build up a fuel supp without disturbing the positionof the governor valve,

and obtain speeds far in excess of those at which the governor is set to.operate, or in other words throttleecheat the governor.

Moreover, my improvedstructure insures.

against dilution of the fuel mixture passing into the intake manifold ofthe engine, insures operation ofthe throttle cheat device when such.

operation is desiredyand provides a supply of clean air-to the engine.

It is also apparent-upon comparing the present invention with the deviceof my Patent No. 2,081,825 and prior art devices that the necessaryscreening and securing nut together with the operation of tapping thecylinder and threading the governor block are all eliminated andgovernor valve.

The invention may be embodied in other spe cific forms without departingfrom the spirit or Y essential characteristics thereof. The presentembodiment is therefore to be considered in all respects as illustrativeand not restrictive, the scope of the invention being indicated by theappended claims rather than by the, foregoing description, and allchanges which come within the meaning and range of equivalency of theclaims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States LettersPatent is:

1. In combination with a""c'arburetor for an in,- ternal combustionengine, said carburetor forming a part of the fuel intake conduit forsaid engine and having, a conduit and a throttle valve associatedtherewith, a governor valve in said conduit for governing the flow offuel mixture to said engine from said carburetor and responsive to therate of flow of fuel mixture, pressure responsive means to operate saidgovernor valve, means to subject said pressure responsive means to thepressure of said fuel mixture adjacent said governor valve, and means tosubject said pressure responsive means to the pressure of said fuelmixture between said throttle valve and the point in said carburetorwhere said fuel mixture is made.

2. In combination with a carburetor for an internal combustion engine,said carburetor forming a part of the fuel intake conduit for saidengine and having a conduit, a throttle and an air filterassociated'therewith, a governor valve in said conduit for governing theflow of fuel mixture to said en e from said carburetor and responsive tothe rateof flow of fuel mixture, pressure responsive means to operatesaid governor valve and means to subject said pressure responsive meansto a differential of pressures-in the fuel mixture adjacent saidgovernor valve and between said throttle and said air filter.

3. In combination with a carburetor for an internal combustion engine,said carburetor having 'a-venturi therein, a governor for governing theflow of fluid to said engine from said carburetor, pressure responsivemeans to operate said governor, and means to subject said pressureresponsive means to a differential of pressures in the fluid adjacentsaid governor and the fluid adjacent the downstream end of said venturi.

i. In combination with a carburetor for an internal combustion engine,said carburetor having 'a venturi therein, a passage through which fluidan air filter associated therewith, a throttle valve in said carburetor,a governor for governing the flow of fuel mixture therethrough forgoverning the flow of fuel mixture from said carburetor to said engineto limit said engine to a predetermined speed, and pressure responsivemeans to operate said governor, said pressure responsive means beingsubject to the diifere'ntial between the pressure of the fuel mixtureadjacent said govemor and the pressure of the fluid between saidthrottle valve'and the filter.

ternal combustion engine, said carburetor having of flow of fuelmixture, means to oppose closing,

movement. of said governor valve in response to the rate of fuel flow togovern said engine at a predetermined speed, pressure responsive meansto operate said governor valve, means to subject said pressureresponsive means to the pressure of fuel mixture adjacent said governor,and means to subject said pressure responsive means to the pressure offluid which has passed through said carburetor filter.

7. In combination with a carburetor for an internal combustion engine,said carburetor forming part of the fuel intake conduit for said engine,a throttle therein, a governor valve in said conduit for governing. theflow of fuel mixture to said engine from said carburetor and responsiveto the rate of flow of fuel mixture, means to oppose closing movement ofsaid governor valve in response to the rate of fuel flow to govern saidengine at a predetermined speed, pressure responsive means to operatesaid governor valve, a conduit to subject one side of said pressureresponsive means to the pressure of fuel mixture adjacent said governorvalve and a second'conduit to subject the opposite side of said pressureresponsive means to the pressure in said carburetor at a 70

